i have a 650 rincon it is a 05 if i dont let it warm up for 20 to 25 min every time i go to use it i can go about 100 to 200 yards and it will drop to 0 mph i have to drop it down to n and rev it up a couple of times and put it back in drive than i can go another 100 to 200 yards and it starts the process all over again once it is warmed up it will go all day with out a problem.also on top end even after it is warmed up it will only go 35mph than i have to let up on it and than give it gas and i can pick up another 5 mph and continue the prosses until i reach the propper speed which on my bike is about 60mph help does anybody out there know how to fix this please give me some answers